Co-Ordination Compounds Question 262
Question: Which one of the following complexes is an outer orbital complex? (Atomic nos.: Mn = 25; Fe = 26; Co = 27, Ni = 28)
Options:
A) $ {{[Co{{(NH_3)}_6}]}^{3+}} $
B) $ {{[Mn{{(CN)}_6}]}^{4-}} $
C) $ {{[ Fe{{( CN )}_6} ]}^{4-}} $
D) $ {{[Ni{{(NH_3)}_6}]}^{2+}} $
Show Answer
Answer:
Correct Answer: D
Solution:
Hybridisation $ \underset{d^{2}sp^{3}}{\mathop{{{[Fe{{(CN)}_6}]}^{4-}}}},,\underset{d^{2}sp^{3}}{\mathop{{{[Mn{{(CN)}_6}]}^{4-}}}}, $ , $ \underset{d^{2}sp^{3}}{\mathop{{{[Co{{(NH)}_3}]}^{3+}}}},,\underset{sp^{3}d^{2}}{\mathop{{{[Ni{{(NH_3)}_6}]}^{2+}}}}, $ Hence $ {{[Ni{{(NH_3)}_6}]}^{2+}} $ is outer orbital complex.
